Lightning damage
Damage has been reported on lettuce following thunderstorms . In this case, the producers observe in their plots more or less wide circular areas of salads which give the impression of having been "cooked". These foci correspond to the point of impact of the lightning. The leaves of the blasted plants died very quickly. We can note a gradient in the severity of symptoms from the center of the outbreak, where salads are particularly affected, outwards. Some plants are completely destroyed.
In this situation, the cause and effect reaction is immediate; it is easy to make the connection between the symptoms and the storm that occurred just before they appeared.